8.24记

num=input("输入一个数字:")
if int(num)<10:
    print(num)
if 3:
    print("ok")
a=[]
if a:
    print("空列表，False")
s="False"
if s:
    print("true")
c=59
if 4<c<60:
    print("1")

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num=input("输入一个数字：")
if int(num)<10:
    print(num)
else:
    print("数字太大")

---

score=int(input("请输入一个在0-100之间的数字："))
grade=""
if score>100 or score<0:
    score=int(input("输入错误，请输入一个0-100之间的数字:"))
else:
    if score>=90:
        grand="A"
    elif score>=80:
        grand="B"
    elif score>=70:
        grand="C"
    elif score>=60:
        grand='D'
    else:
        grand='E'
    print("分数为{0}，等级为{1}".format(score,grand))

---

num=0
sum_all=0
sum_even=0
sum_odd=0
while num<=100:
    sum_all+=num
    if num%2==0:sum_even+=num
    else:sum_odd+=num
    num+=1
print("1-100所有数字累加和：",sum_all)
print("1-100所有奇数的累加和：",sum_odd)
print("1-100所有偶数的累加和：",sum_even)

---

num=0
sum_all=0
sum_even=0
sum_odd=0
for num in range(101):
    sum_all+=num
    if num%2==0:sum_even+=num
    else:sum_odd+=num
print("1-100累加和{0}，奇数和{1}，偶数和{2}".format(sum_all,sum_odd,sum_even))

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end=''的意思

 

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99乘法表

for m in range(10):
    for n in range(1,m+1):
        print("{0}*{1}={2}".format(m,n,(m*n)),end='\t')
    print()

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while True:
    a=input("请输入一个字符（q或Q）")
    if a.upper()=='Q':
        print("循环结束，退出。")
        break
    else:
        print(a)

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a=0
b=0
sala=[]
while True:
    s=input("请输入员工工资：（q或Q结束）")

    if s.upper()=='Q':
        print("录入完成，退出")
        break
    if float(s)<0:
        continue
    a+=1 
    sala.append(float(s))
    b+=float(s)
print("员工数{0}",format(a))
print("录入薪资：",sala)
print("平均薪资{0}".format(b/a))

---